As a noun parasite

is (pejorative) a person who lives on other people's efforts or expense and gives little or nothing back.

As an adverb parasitologically is

in a parasitological manner; as regards parasites or parasitology.

As a noun parasitology

is a study of parasites.

As an adverb parasitologically is

in a parasitological manner; as regards parasites or parasitology.

In computing terms the difference between alias and dba

is that alias is to assign an additional name to an entity, often a more user-friendly one while dba is database administrator.

As an adverb alias

is otherwise; at another time; in other circumstances; otherwise called.

As a verb alias

is to assign an additional name to an entity, often a more user-friendly one.

As an initialism DBA is

database analyst.

As nouns the difference between tower and serac

is that tower is control tower (for air traffic) while serac is a sharp tower of ice formed by intersecting crevasses of a glacier.

As a proper noun tower

is tower of london.

As nouns the difference between ice and serac

is that ice is while serac is a sharp tower of ice formed by intersecting crevasses of a glacier.

As nouns the difference between crevasse and serac

is that crevasse is a crack or fissure in a glacier or snow field; a chasm while serac is a sharp tower of ice formed by intersecting crevasses of a glacier.

As a verb crevasse

is to form crevasses.

As nouns the difference between glacier and serac

is that glacier is (geology) a large body of ice which flows under its own mass, usually downhill while serac is a sharp tower of ice formed by intersecting crevasses of a glacier.

As an adverb sexually

is in a sexual manner: erotically.

As a noun hoodrat is

(slang) a sexually promiscuous girl.

As an adjective promiscuous

is made up of various disparate elements mixed together; of disorderly composition.

As a noun hoodrat is

a sexually promiscuous girl.

As nouns the difference between bullet and spitzer

is that bullet is a projectile, usually of metal, shot from a gun at high speed while spitzer is sharpener (device for making things sharp).

As a verb bullet

is (informal) to draw attention to (text) by, or as if by, placing a graphic bullet in front of it.